Internal-combustion engine.



e. 0. REESE. LNTERNAL COMBUSTION ENGINE.

v 7 APPLICATION FILED NOV- 26, 1915 1 ,1 91 ,27. I x Patented July 18,1916.

E a SHEETS-SHEET 1.

G. C. REES-E. INTERNAL COMBUSTION ENGINE.

I APPLICATION FILED NOV. 26. I915- 1,1 91,827 1 31mm July 18 1,916.

3 SHEETS-SHEET 2- e. c. REESE. INTERNAL COMBUSHON ENGINE.

APPLICATION FILED NOV-26.1915.

Patented July 18, 1916.

3 SHEETS-SHEET a.

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g-KWVW at the same time with a i'elativelyvhighelii- UNITED STATESspecification.

ence being had ings, in' which,

l igui'esfl-l' and are 0l0\'2 llll()llS partly in OFFICE;

-GEORGE C. REESE, --OF DARBY, PENNSYLVANIA,

mrrs mAL-coivmusmon ENGINE.

halite/tom it-may concern: I i

Be it known that LGEORQE C, REESE, a

citizen of the United States, residing in Darby,'Delawarecounty, State'of Pennsylvania,.haveinvented an Iiite'r ial-Coii bustion Engine, of\YlIICli the following is a \Vhile it is recognized that engines of thetwo cycle type are considerably cheaper to,

build as well as simpler to operatethan those of the four cycle type,they are not .fitted for many classes of work owing to 7 their low powerand eiii'ciency resulting from their slow speed. I

.()no ob ect therefore of my invention s to provide an internalcombustion engine:

of either the two or four cycle type whose construction shall be suchthat it will be possible for it to opei'ateat ni atei'ially higherspeeds than are now allowable for engines of'the same pistondisplacement and ciency. 1 i

"More particularly the nventionconteinplates the provision of-aninternal coinbnsQ tionenginewith means whereby the speed ofitspiston-shall be iiiaterialjlydecreased at" certain parts of itssti'okeand correspondingly increased at other parts, in order to permit of theproper exhaust of t'he products of-comlnistion and the intake of asutlicient fuel charge while -reducing the;

tune in which heat may be radiated from the 7 .hot gases of the.exploded charge to the piston, cylinder, water jac'ket,-etc.

"These ob'ects and other advanta eous.- l)

ends I secure as hereinafter set forth, r'efei;

to the accompany ng drawsection and to some extent diagrammatic 4 with acrank shaft 5 in the well known 'inanner. According to my invention Iproillustrating a two cycle engine equipped with my invention; andl ig.3 is an elevation partlyin' section illustrating the invention asapplied to an engine of the four cycle type.

In the above drawings 1 represents the i' cylinder and 2'tlie crank caseof a two cycle engine having-a piston 3 connected by a rod vide anauxiliary 'or counter shaft 6 parallel with the crank shaft ,5and. onitmount a i'ly wheel 7, connectiiig said two shafts by.

gears- 8 and 9, Said gears are primarily eccentrically mounted, beingpreferably I Specification of Letters Patent.

Patented Jiily s, 1916.

'Application filed No ember 26, 1915. Serial No. 63513.

ellipticalin outline and in both cases the center lines of the shafts-oand '6 pass respectively through'one of the principal foci of the gearwhich v is mounted [upon it. Moreover the gearS is so set on the shaft 5that when the piston 23 is at the upper. end I of its stroke itis'engaged by those teeth of the gear 9 farthest from the shaft (Sand atv a minimum distance from said shaft 5.

Obviously after such an engine has been brought up. to speed,theexplosion of a charge in its cylinder will'force its piston down'at 'aianaxnnum speed and transmit power through" the shaft to the machine tobedriven, a certain", being stored by the 1 piston reaches the en'doflits stroke and uncovers the exhaust pprt, it is permitted to move ata lower ratejieven though the shaft continue its revolution at'a'uniform speed, 'the gear 9 bn the shaft 6 driving the gear 8 on theshaft 5 the elliptical 'istrnction illustrated; .The san'ie ,conditioexists after the exhaust of thG'PIOdiICfS of combustion hasoccurred andthe fuel inlet port 11 has been opened, al-" though the speed of thepiston is gradually increased during the compression stroke engineequipped with my invention would operate at a materially higherefficiency because of the *reducedloss of heat during the expansion ofthe hot gases." By the invene .tion above described itlis thus possiblefor a two cycle engine to beeinployed for work where its slow speed andpoor efficiency have hitherto pi'ohibited'such use. f

If desired my invention maybe applied to engines of the four cycle typeby providing acounter shaft 13 and a pair of coactat a" reduced speedowing. to

"ms portion, of said power ly--wlieel.v \Vhen said N (5 under the actionof the'fly wheel tendsito until, when the charge is exploded, it.isagain forced downward at a speed which 100. time. with thesame p istondisplacement an i ing eccentrically mounted gears 14 and 15 asillustrated in Fig. 3;one of said gears being mounted on the crank shaft16 and the other on said counter shaft which also -arries the fly \vheel17. The gears l-l and 15 are so sct in this instance that the speed ofthe crank shaft 10 is higher than that of the counter-shaft 13 on thefiring and intake strokes but is less than that of said shaft on thecompression and exhaust strokes. As before, owing to the increasedpiston speed during the tiring stroke, less time is permitted for theradiation of heat from the hot gases to the cylinder, piston, etc., sothat a higher efficiency of operation is secured. At the sametime owingto the reduction of speed 7 the piston during its compression andexhaust strokes, the engine may be operated without loss of el'liciencyat higher speeds than have hitherto been allowable.

111 both the two cycle and four cycle types of engine employing myinvention it will be understood that the fly wheel on the counter shaftretains the latte and the apparatus driven therefrom at a substantiallyconstant speed while the crank shaft and the parts attached thereto arecaused to operate at a speed which varies during each stroke as aboveindicated. 'hile .l have illustrated my invention as applied to a singlecylinder engine, it is obviously immaterial whether said engine beequipped with two or more cylinders since the counter shaft with its flywheel and the gears connecting with the crank. shaft perform the samefunction in any case. i

As will be understood by those skilled in the art, the setting of thegears 8 and 9 is not necessarily limited to the relative positions shownin the drawings, since it is conceivable that it may be advantageous tohave the variations in speed of the two shafts 5 and ,(3 occur at pointsin the cycle in the 'engine vother than those above described. Itwill-further be nnderstood that when the main shaft'6 isto' be driven bypower from ..-a.,num-ber of cylinders, these may be grouped around it inany manner best suited to econom1ze; space or-secnre; any other desiredreisult w thout depart ngfrom my invention.

the crank shafts being connected to said main shaft through gears asabove described.

I claim 1. The combination in an internal combustion engine of a crankshaft; a counter shaft; means tending to maintain the speed of thecounter shaft substantially uniform; and means connecting said shaftsfor causing the speed of the crank shaft to vary during each stroke.

2. {the combination with an internal combustion engine having a crankshaft of a counter shaft; a fly wheel on said counter shaft; and meansconnecting the crank shaft and counter shaft for causing variation ofthe speed of the former while allowing the latter shaft to rotate at asubstantially uniform speed.

3. The combinatitm with an internal combustion engine having a crankshaft of a counter shaft; elliptical gearing connecting said shafts; anda fly wheel on the counter shaft.

l. The combination with an internal combustion engine having a crankshaft of a counter shaft; ecccntrically mounted gears connecting saidshafts; and a fly wheel on the counter shaft.

5. The combination with an internal combustion engine having a crankshaft of a counter shaft; a fly wheel on the. counter shaft; .witheccentrically mounted gears connected between said shafts and set tocause a retardation of the piston speed during the exhaust of theproducts of combustion.

6. The combination with a two cycle internal combustion engine having acrank shaft of 'a con 1' shaft; a fly wheel on the counter shaft; withgearing connecting said shafts mounted to permit rotation of the crankshaft at a higher speed than the counter shaft during the firing strokeof thepiston, and to allow said crank shaft to move at a speed lowerthan that of the take.

GEORGE O. ltl ll lSl l.

